AD 94-15-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Canada Limited | 206A | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
| aircraft | Bell Helicopter Textron Canada Limited | 206B | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
| aircraft | Bell Helicopter Textron Canada Limited | 206L | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
| aircraft | Bell Helicopter Textron Canada Limited | 206L-1 | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
| aircraft | Bell Helicopter Textron Canada Limited | 206L-3 | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
| aircraft | Bell Helicopter Textron Canada Limited | 206L-4 | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Series Helicopters |
Unsafe Condition
Cracks in the main rotor blade trailing edge near the inboard trim tab, which can propagate through the trailing edge strip, blade skins, and forward to the blade spar, starting at sanding or grinding marks in the trim tab radius areas.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a one-time inspection for cracks in each blade's inboard trim tab and trailing edge within 50 hours' time-in-service. Replace the blade or trim tab as necessary, or rework the blade trailing edge and trim tab following specified service bulletins. Inspections must use a 10-power or higher magnifying glass where required, and comply with polishing, finishing, and installation steps in the referenced Alert Service Bulletins.
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Compliance Time
within 50 hours' time-in-service after the effective date of this airworthiness directive
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 helicopters equipped with specific main rotor blades (part numbers 206-010-200-133 or 206-015-001-107 with serial numbers starting with 'A'), excluding blades listed as exempt in the referenced Alert Service Bulletins.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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